SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('a023d8a4fbaf0ac56e78d71fefbc5993','0','18.222.138.230','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715193406','editpost.php?postid=1977&sid=a337abe91b857f5fb3b3f30dd5313fef','0','0','')
mysql error: Duplicate entry 'a023d8a4fbaf0ac56e78d71fefbc5993' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 20:36
Script: /editpost.php?postid=1977&sid=a337abe91b857f5fb3b3f30dd5313fef
Referer: http://wehrbauten.de/editpost.php?postid=1977&sid=a337abe91b857f5fb3b3f30dd5313fef